Engineering
GREAT
Solutions
Location: New York City, NY
Customer: New York City Transit
Key benefit: Increased equipment
uptime
Case study
Requirement
Maintenance engineers at New York City
Transit had seen conditions where moisture
in compressed air caused mechanical
problems on subway cars downstream,
including preventing the brake trip valve from
resetting. The engineers found that the OEM
pressure swing dryers on the compressor
skids removed damaging moisture when they
were first installed on the subway cars, but
performance declined, especially during hot,
humid New York City summers. To extend
dryer life and increase vehicle uptime, New
York City Transit asked Norgren for a dryer
that would maintain peak performance over
time.
Solution
IMI Precision Engineering designed a test
consisting of a multi-stage filtration system
to remove particulates, liquid water and oil
aerosols and the new IMI Norgren Adsorbent
Media Tube (AMT) Dryer. The AMT Dryer
uses a polymer tubes impervious to moisture,
unlike traditional desiccant beads that fail
when saturated. After 12 months of operation
in extreme temperatures and humidity, test
results showed the air leaving the dryers was
as dry as when the system was first installed.
The AMT Dryer is projected to last up to
18,000 service hours.
New dryer technology extends service
life, protects equipment
Engineering
GREAT
Solutions
CS-15
For further information visit www.norgren.com or call 1.800.710.7823
